We write Eclipse client to the database using hibernate and fishbolt technologies.

This and other examples are available for download here.

Plugin - data model

In this section, we create a separate eclise plugin that will contain the data model (separating data from the user interface is a good tone, as we know)

Create a plugin

After creating the plugin, we will write the necessary dependencies:
And add a line to the file MANIFEST.MF (to use a single class loader, which is required when working with hibernate libraries):
Eclipse-RegisterBuddy: org.fishbolt.model.hibernate.annotations

')

Create classes of data objects and data object managers

The data object "Department":
/**<br>* Data object presenting department<br>*/<br>@DisplayLabel("Department")<br>@ImageResource("department.gif")<br>@Entity<br>@Tuplizer(impl = CompanyModelTuplizer.class)<br>@AccessType("org.fishbolt.model.hibernate.FieldAccessor")<br>public class Department <br> extends HDataObject<DepartmentManager> {<br><br><br> @Id<br> @GeneratedValue<br> @DisplayLabel("Identity")<br> public final static FieldDeclaration<Integer> id = <br> new FieldDeclaration<Integer>(Department.class);<br><br> @ObjectPresentationField<br> @Column(unique=true, nullable=false)<br> @DisplayLabel("Name")<br> @Width(250)<br> public final static FieldDeclaration<String> name = <br> new FieldDeclaration<String>(Department.class);<br><br><br> @DisplayLabel("Employees")<br> @Relation(inverse="department")<br> @OneToMany(targetEntity=Employee.class)<br> @JoinColumn(name="department")<br> public final static FieldDeclaration<Set<Employee>> employees = <br> new FieldDeclaration<Set<Employee>>(Department.class);<br> <br> public Department(DepartmentManager manager) {<br> super(manager);<br> }<br> <br> public Department() {<br> super();<br> }<br>}<br>
Manager of the data object "Department":
/**<br> * Manager class for {@link Department} data object.<br> */<br>public class DepartmentManager <br> extends HDataObjectManager<Department,Integer>{<br> <br> /**<br> * Constructor inherited from the super class<br> */<br> public DepartmentManager(IDataModel dataModel,<br> ObjectDescriptor<?,?> objectDescriptor) {<br> super(dataModel, objectDescriptor);<br> }<br><br> /**<br> * Searches for a department by its name<br> * @param name - the name of the department to search for<br> * @return department or <code>null</code><br> */<br> public Department findDepartment(String name){<br> String hql = "from Department where name=?";<br> QueryUniqueResultCommand<Department> cmd = <br> new QueryUniqueResultCommand<Department>(hql);<br> cmd.setParameters(new Parameter(name));<br> return this.getModel().processCommand(cmd);<br> }<br>}<br>
Employee data object:
/**<br> * Data object presenting employee<br> */ <br>@DisplayLabel("Employee")<br>@ImageResource("employee.gif")<br>@Entity<br>@Tuplizer(impl = CompanyModelTuplizer.class)<br>@AccessType("org.fishbolt.model.hibernate.FieldAccessor")<br>public class Employee extends HDataObject<EmployeeManager> {<br> <br> @Id<br> @GeneratedValue<br> @DisplayLabel("Identity")<br> public final static FieldDeclaration<Integer> id = <br> new FieldDeclaration<Integer>(Employee.class);<br><br> @Transient<br> @ObjectPresentationField<br> @DisplayLabel("Name")<br> @Width(250)<br> public final static FieldDeclaration<String> name = <br> new FieldDeclaration<String>(Employee.class);<br><br> @Column(nullable=false)<br> @DisplayLabel("First Name")<br> public final static FieldDeclaration<String> firstName = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @Column(nullable=false)<br> @DisplayLabel("Last Name")<br> public final static FieldDeclaration<String> lastName = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @DisplayLabel("Phone Number")<br> public final static FieldDeclaration<String> phoneNumber = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @SimpleDateFormatPresentation("dd/MM/yyyy")<br> @DisplayLabel("Birthday")<br> public final static FieldDeclaration<Date> birthday = <br> new FieldDeclaration<Date>(Employee.class);<br><br> @DisplayLabel("Salary")<br> @Column(nullable=false)<br> @DecimalFormatPresentation("#,##0.00")<br> @PresentationDecorator(prefix="$ ")<br> public final static FieldDeclaration<BigDecimal> salary = <br> new FieldDeclaration<BigDecimal>(Employee.class);<br> <br> @DisplayLabel("Health")<br> @NumberFormatPresentation(NumberFormatInstance.percent)<br> public final static FieldDeclaration<Double> health = <br> new FieldDeclaration<Double>(Employee.class);<br> <br> @DisplayLabel("Department")<br> @Relation(inverse="employees")<br> @ManyToOne(optional=false)<br> @JoinColumn(name="department")<br> public final static FieldDeclaration<Department> department = <br> new FieldDeclaration<Department>(Employee.class);<br> <br> public Employee(EmployeeManager manager) {<br> super(manager);<br> }<br> <br> public Employee() {<br> super();<br> }<br>}<br>
Manager of the Employee data object:
/**<br> * Manager class for {@link Employee} data object.<br> */<br>public class EmployeeManager <br> extends HDataObjectManager<Employee,Integer>{<br> <br> /**<br> * Constructor inherited from the super class<br> */<br> public EmployeeManager(IDataModel dataModel,<br> ObjectDescriptor<?,?> objectDescriptor) {<br> super(dataModel, objectDescriptor);<br> }<br><br> /**<br> * Searches for an employee among all employees of a company<br> * @param firstName - employee's first name<br> * @param lastName - employee's last name<br> * @return <code>List</code> of employees<br> */<br> public List<Employee> findEmployee(String firstName,String lastName){<br> String hql = "from Employee where firstName=? and lastName = ?";<br> QueryListCommand<Employee> cmd = new QueryListCommand<Employee>(hql);<br> cmd.setParameters(<br> new Parameter(firstName),<br> new Parameter(lastName));<br> return this.getModel().processCommand(cmd);<br> }<br> <br> /**<br> * Searches for an employee in a department <br> * @param firstName - employee's first name<br> * @param lastName - employee's last name<br> * @param department<br> * @return <code>List</code> of employees<br> */<br> public List<Employee> findEmployee(String firstName,String lastName, Department department){<br> String hql = "from Employee where firstName=? and lastName=? and department=?";<br> QueryListCommand<Employee> cmd = new QueryListCommand<Employee>(hql);<br> cmd.setParameters(<br> new Parameter(firstName),<br> new Parameter(lastName),<br> new Parameter(department));<br> return this.getModel().processCommand(cmd);<br> }<br>}<br>

Declare the data model class

/**<br> * Company model class<br> */<br>public class CompanyModel extends DataModel {<br> <br> public final static <br> ObjectDescriptor<EmployeeManager,Employee> employee = <br> new EObjectDescriptor<EmployeeManager,Employee>(CompanyModel.class);<br> <br> public final static <br> ObjectDescriptor<DepartmentManager,Department> department = <br> new EObjectDescriptor<DepartmentManager,Department>(CompanyModel.class);<br> <br> public static ModelDescriptor getDescriptor(){<br> return CompanyModel.department.getModelDescriptor();<br> }<br> <br> private static CompanyModel instance;<br> <br> public static CompanyModel getInstance(){<br> return (instance == null) ? <br> instance = new CompanyModel(getDescriptor()) : <br> instance;<br> }<br><br> private CompanyModel(ModelDescriptor modelDescriptor) {<br> super(modelDescriptor);<br> } <br>}<br>

Customize Hibernate

Create a certain Tuplizer-class (mentioned in the annotation of the data object classes of the same name):
public class CompanyModelTuplizer extends DataObjectTuplizer {<br><br> /**<br> * Constructor inherited from the super class<br> */<br> public CompanyModelTuplizer(EntityMetamodel entityMetamodel, <br> PersistentClass mappedEntity) {<br> super(entityMetamodel, mappedEntity);<br> }<br><br> @Override<br> protected ModelDescriptor getModelDescriptor() {<br> return CompanyModel.getDescriptor();<br> }<br>}<br>
create hibernate.cfg.xml
<?xml version='1.0' encoding='utf-8'?><br><!DOCTYPE hibernate-configuration PUBLIC<br> "-//Hibernate/Hibernate Configuration DTD//EN"<br> "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><br> <br><hibernate-configuration><br> <session-factory><br> <property name="hibernate.dialect"><br> org.hibernate.dialect.PostgreSQLDialect<br> </property><br> <property name="hibernate.connection.driver_class"><br> org.postgresql.Driver<br> </property><br> <property name="hibernate.connection.url"><br> jdbc:postgresql://localhost/company<br> </property><br> <property name="hibernate.connection.username"><br> postgres<br> </property><br> <property name="hibernate.connection.password"><br> ********<br> </property><br> <br> <mapping class="example.model.objects.Department"/><br> <mapping class="example.model.objects.Employee"/><br> </session-factory><br></hibernate-configuration><br><br>

Calculated fields

The “Employee” data object contains the name field. This field is computable and, accordingly, is not reflected in the database. Below, we implement the algorithm for calculating this field:
public class EmployeeFullNameCalculation <br> implements IFieldCalculation<String> {<br> <br> public FieldPath[] getInfluencingPaths(FieldDescriptor<String> dependent) {<br> return new FieldPath[]{<br> new FieldPath(true, CompanyModel.employee,Employee.firstName),<br> new FieldPath(true, CompanyModel.employee,Employee.lastName)<br> };<br> }<br><br> public String evaluateValue(IDataField<String> toEvaluate) {<br> Employee employee = (Employee)toEvaluate.getDataObject();<br> return ModelUtil.getValue(employee,Employee.firstName)+<br> " " + ModelUtil.getValue(employee,Employee.lastName);<br> }<br>}<br>
Coupled implemented calculation algorithm with data field in code
public class CompanyCalculationProviderFactory <br> extends FieldCalculationProviderFactorySafe{<br><br> /**<br> * Binds calculated fields with calculation classes<br> */<br> @Override<br> protected void bindCalculations() {<br> // binding <code>Employee.name</code> with <code>EmployeeFullNameCalculation</code><br> bindCalculation(CompanyModel.employee,Employee.name, <br> new EmployeeFullNameCalculation());<br> <br> }<br>}<br>

Plugin manifest changes

We register the providers of the factory - we declare the extension of the ModelAdapterFactory point: The plugin.xml file plugin.xml displayed as follows:
<?xml version="1.0" encoding="UTF-8"?><br><?eclipse version="3.2"?><br><plugin><br> <extension<br> point="org.fishbolt.model.ModelAdapterFactory"><br> <model class="example.model.CompanyModel"><br> <factory class="example.model.calculations.CompanyCalculationProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.compare.ComparatorProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.listener.ListenerRegistryAdapterFactory"/><br> <factory class="org.fishbolt.model.ext.width.WidthProviderFactory"/><br> <factory class="org.fishbolt.model.ext.image.ObjectImageProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.presenter.HPresenterProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.calculate.HInfluencingFieldProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.state.FieldStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HObjectStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HFieldDescriptorStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HObjectDescriptorStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.field.HFieldManagerProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.object.HObjectManagerProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.label.LabelProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.HModelProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.annotations.provider.AnnotationConfigurationProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.lo.HLargeObjectProviderFactory"/><br> </model><br> </extension><br></plugin>
We export packages:
And add the driver library to the database:

Plugin in the end

Create database tables

Create a database "company" (Postgres - server). And create the tables:
CREATE TABLE department<br>(<br> id integer NOT NULL,<br> name character varying(255) NOT NULL,<br> CONSTRAINT department_pkey PRIMARY KEY (id),<br> CONSTRAINT department_name_key UNIQUE (name)<br>)<br><br>CREATE TABLE employee<br>(<br> id integer NOT NULL,<br> firstname character varying(255) NOT NULL,<br> lastname character varying(255) NOT NULL,<br> phonenumber character varying(255),<br> birthday date,<br> health double precision,<br> parttime boolean,<br> salary numeric(19,2),<br> department integer NOT NULL,<br> CONSTRAINT employee_pkey PRIMARY KEY (id),<br> CONSTRAINT fk4afd4acec0414ee2 FOREIGN KEY (department)<br> REFERENCES department (id) <br>)<br>

Plugin - user interface

Create a user interface plugin and add dependencies As we can see, among the dependencies is located, we created earlier plug-in - data model ( example.org.fishbolt.model.hibernate.annotations )

Wizard for creating data objects

Create classes for creating a data object. The following is the wizard code for the Employee data object:
/**<br> * Wizard for adding new employees<br> */<br>public class NewEmployeeWizard extends ObjectNewWizard {<br><br> public NewEmployeeWizard() {<br> // indicating the descriptor of a data object<br> // whose instances will be created by the wizard<br> super(CompanyModel.employee);<br> }<br> <br> @Override<br> protected IDataModel getDataModel(IWorkbench workbench, <br> IStructuredSelection selection) {<br> // providing a reference to the data model<br> // to which new Employee instances will be added<br> return CompanyModel.getInstance();<br> }<br><br> @SuppressWarnings("unchecked")<br> @Override<br> public void init(IWorkbench workbench, <br> IStructuredSelection selection){<br> super.init(workbench, selection);<br> // setting a default value to Employee.department<br> Object selectionObject = selection.getFirstElement();<br> if (selectionObject instanceof Department){<br> ModelUtil.setValue(this.wizardObject,<br> Employee.department,(Department)selectionObject);<br> }<br><br> String name = <br> LabelProvider.getDisplayLabel(CompanyModel.employee);<br> <br> // adding pages for step-by-step creation of Employee instances<br> this.addPage(<br> new ObjectSimpleWizardPage(name,name,null,<br> Employee.firstName,<br> Employee.lastName,<br> Employee.department,<br> Employee.phoneNumber));<br> this.addPage(<br> new ObjectSimpleWizardPage(name,name,null,<br> Employee.birthday,<br> Employee.salary,<br> Employee.health));<br> }<br>}<br>
We register the corresponding extension The first page of the wizard for creating an object of the type “Employee” is as follows: Add the UI command command code (UI action), which opens the wizard dialog for creating the “Employee” object
public class OpenNewEmployeeWizardAction extends OpenNewWizardAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenNewEmployeeWizardAction(ViewerController controller) {<br> super(controller, "New Employee...","Creates a new employee");<br> }<br><br> @Override<br> public INewWizard getNewWizard() {<br> return new NewEmployeeWizard();<br> }<br> <br> @Override<br> public void updateEnable() {<br> this.setEnabled(getActionObject() instanceof Department);<br> }<br>}

Data Object Editor

Create classes of editors for data objects.
/**<br> * EditorFactory for <code>Employee</code>s<br> */<br>public class EmployeeEditorFactory extends EditorFactory {<br><br> EmployeeEditorFactory() {<br> // Indicating an Employee object via its descriptor<br> // and creating editor pages <br> super(CompanyModel.employee,<br> new SimpleEditorPageFactory(<br> "Personal information", <br> Employee.firstName,<br> Employee.lastName,<br> Employee.phoneNumber,<br> Employee.birthday,<br> Employee.health),<br> new SimpleEditorPageFactory(<br> "Department information",<br> Employee.department,<br> Employee.salary)<br> );<br> }<br>}



/**<br> * EditorFactory for <code>Department</code>s<br> */<br>public class DepartmentEditorFactory extends EditorFactory {<br><br> DepartmentEditorFactory() {<br> // Indicating a Department object via its descriptor<br> // and creating editor pages <br> super(CompanyModel.department,<br> new SimpleEditorPageFactory(<br> LabelProvider.getDisplayLabel(CompanyModel.department), <br> Department.name)<br> );<br> }<br>}<br>
We also need to create an editor provider class and register it:
public class CompanyEditorProvider extends EditorProvider {<br> <br> public CompanyEditorProvider(){<br> register(new DepartmentEditorFactory());<br> register(new EmployeeEditorFactory());<br> }<br>}
And announce the editor:
The created editor for an object of the type “Employee” looks as follows: Add UI command code (UI action), which opens the editor for data objects
public class OpenInEditorAction extends OpenEditorAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenInEditorAction(ViewerController controller) {<br> super("example.model.eclipse.DataObjectEditor", controller);<br> }<br>}
For example, we also add the code of the user interface command (UI action), which opens the editor for data objects in a special perspective.

public class OpenInEditorPerspectiveAction extends OpenEditorPerspectiveAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenInEditorPerspectiveAction(ViewerController controller) {<br> super("example.model.eclipse.perspectives.ObjectEditorPerspective",<br> "example.model.eclipse.DataObjectEditor",<br> controller);<br> }<br>}

Dialogue to change the value of the data field

The following is a dialog box class that translates an employee from one department to another:
/**<br> * Dialog that moves an employee from one department to another<br> */<br>public class ChangeDepartmentDialog <br> extends Dialog implements IWidgetsContext{<br> <br> private Employee employee;<br> private ContextControllerBinder contextBinder;<br><br> public ChangeDepartmentDialog(Shell parentShell,Employee employee) {<br> super(parentShell);<br> this.employee = employee;<br> }<br><br> /**<br> * Returns ContextControllerBinder that binds<br> * user interface components with data model components<br> * through controllers<br> */<br> public ContextControllerBinder getContextBinder() {<br> return contextBinder == null ? <br> contextBinder = new ContextControllerBinder(this) : contextBinder;<br> }<br><br> /**<br> * Creates dialog's contents <br> * and binds user interface components with data model components<br> */<br> @Override <br> protected Control createDialogArea(Composite parent) <br> {<br> // dialog title<br> parent.getShell().setText(PresenterProvider.getPresentation(employee));<br> <br> Composite result = new Composite(parent, SWT.NONE);<br> result.setLayout(new GridLayout(2, true));<br><br> Label decription = new Label(result, SWT.NULL);<br> decription.setLayoutData(<br> new GridData(GridData.FILL,GridData.FILL,true,true,2,1));<br> decription.setText("To move the employee to another department, " +<br> "select the department and press OK.");<br> <br> // Label presenting the data object field<br> Label label = new Label(result, SWT.NULL);<br> label.setLayoutData(new GridData());<br> <br> // Combo presenting data field values<br> Combo combo = new Combo(result, SWT.BORDER | SWT.DROP_DOWN);<br> combo.setLayoutData(<br> new GridData(GridData.FILL,GridData.CENTER,true,false));<br> <br> ContextControllerBinder binder = getContextBinder();<br> // binding Label to FieldDescriptor <br> // (the controller that is responsible for interaction<br> // between Label and FieldDescriptor is created automatically)<br> binder.bind(label, <br> CompanyModel.employee.getFieldDescriptor(Employee.department));<br> // binding data field to Combo <br> // (the controller that is responsible for interaction<br> // between data field and Combo is created automatically)<br> binder.bind(combo, <br> employee.getDataField(Employee.department)); <br> <br> return result;<br> }<br><br><br> /**<br> * Reacts to changes resulted from user's actions on the UI<br> * components (controls) that were bound to data model<br> * components using ContextControllerBinder<br> */<br> @SuppressWarnings("unchecked")<br> public void contextWidgetChanged(<br> EditableWidgetController<Widget, Object, Object> controller,<br> PresentationException exception) {<br> if (exception!= null){<br> MessageDialog.openError(this.getShell(), <br> "The value is incorrect.",<br> "Please specify a correct value.");<br> return;<br> }<br> Collection<ValidationMessage<IDataObject, Severity>> problems <br> = employee.validate(null);<br> <br> if (problems.isEmpty()) return;<br> <br> showProblems(problems);<br> <br> employee.refresh();<br> }<br> <br> /**<br> * Shows information about the data object problems<br> * @param problems<br> */<br> protected void showProblems(<br> Collection<ValidationMessage<IDataObject, Severity>> problems){<br> StringBuffer msg = new StringBuffer();<br> for (ValidationMessage<IDataObject, Severity> problem : problems){<br> msg.append(problem.getDescription());<br> msg.append("\\;n");<br> }<br> <br> MessageDialog.openError(this.getShell(), <br> "The value is incorrect.",msg.toString());<br> <br> }<br> <br> <br> /**<br> * Cancel button handler<br> */<br> @Override<br> protected void cancelPressed() {<br> employee.refresh();<br> super.cancelPressed();<br> }<br> <br> /**<br> * OK button handler <br> */<br> @Override<br> protected void okPressed() {<br> employee.store();<br> super.okPressed();<br> }<br>}
This is the dialog box for transferring an employee from one department to another:

Tree "Department" - "Employee"

Create a tree that shows all the departments and their employees:
/**<br> * Creates a view that contains<br> * the tree of departments and employees<br> */<br>public class DepartmentEmployeesView extends ViewPart {<br> <br> private TreeViewerController treeController = null;<br> <br> @Override<br> public void createPartControl(Composite parent) {<br> // creating a controller for TreeViewer<br> treeController = new TreeViewerController(parent);<br> // setting layout<br> GridData data = new GridData(GridData.FILL,GridData.FILL,true,true);<br> treeController.getViewer().getControl().setLayoutData(data);<br> <br> // Using ColumnData to wrap up data objects to be represented in tree nodes.<br> // Data objects are specified through their descriptors<br> treeController.setColumnProvider(<br> new ColumnProvider(<br> new ColumnData(CompanyModel.department).add(CompanyModel.employee)));<br> <br> // Wrapping data in TreeDataObjects and passing it to the controller.<br> // To put it in more details:<br> // - indicating data objects to be represented in parent nodes.<br> // In this case, these are objects of the Deparment type.<br> // The Department objects are indicated through their manager (DepartmentManager).<br> // - indicating data objects to be represented in child nodes.<br> // They are indicated through a bidirectional association.<br> // In this case, the bidirectional association is expressed by Department.employees<br> CompanyModel model = CompanyModel.getInstance();<br> DepartmentManager manager = model.getDataObjectManager(CompanyModel.department);<br> treeController.setDataObjects(<br> new TreeDataObjects(<br> new ManagerDataObjects(manager),<br> new ChildRelation(CompanyModel.department,Department.employees)));<br><br> // building a context menu for the tree<br> ContextMenu menu = new ContextMenu();<br> menu.add(new OpenInEditorAction(treeController));<br> menu.add(new OpenInEditorPerspectiveAction(treeController));<br> menu.add(new OpenNewDepartmentWizardAction(treeController));<br> menu.add(new OpenNewEmployeeWizardAction(treeController));<br> menu.add(new ChangeEmployeeDepartmentAction(treeController));<br> menu.add(new ShowDepartmentEmployeesAction(treeController));<br> menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));<br> menu.add(new RemoveDataObjectAction(treeController));<br> treeController.setContextMenu(this.getSite(),menu);<br> }<br><br> @Override<br> public void setFocus() {<br> this.treeController.getViewer().getControl().setFocus();<br> }<br>}
Register the corresponding extension ( org.eclipse.ui.views ) the result of our efforts:

Employees table

/**<br> * Creates a view that contains<br> * a table displaying information about employees<br> */<br>public class EmployeesView extends ViewPart{<br> <br> private TableViewerController tableController = null;<br><br> /**<br> * Opens the view and passes to the controller<br> * a collection of <code>Employee</code>s to be represented<br> * in a table within the view.<br> */<br> public static void setEmployees(List<? extends Employee> employess){<br> EmployeesView view = getView();<br> view.tableController.setDataObjects(<br> new CollectionDataObjects(employess));<br> }<br><br> /**<br> * Opens the view and passes to the controller<br> * a collection of <code>Employee</code>s to be represented<br> * in a table within the view.<br> * The collection of <code>Employee</code>s is specified via<br> * the association with the <code>Department</code> object (Department.employees)<br> */ <br> public static void setDepartment(Department department){<br> EmployeesView view = getView();<br> IDataField<Set<Employee>> field = <br> department.getDataField(Department.employees);<br> view.tableController.setDataObjects(new RelationDataObjects(field));<br> }<br> <br> @Override<br> public void createPartControl(Composite parent) {<br> // Creating a controller<br> tableController = new TableViewerController(parent);<br> // Setting layout<br> GridData data = new GridData(GridData.FILL,GridData.FILL,true,true);<br> tableController.getViewer().getControl().setLayoutData(data);<br> // Specifying data presentation.<br> // Passing to the controller an OddBackgroundColorPresentation instance<br> // that pastes the background of even table cells<br> // with the color specified. Default is RGB(230,230,255)<br> tableController.setDataPresenation(<br> new EvenBackgroundColorPresentation(tableController));<br> <br> // Configuring table columns.<br> // Using ColumnData to wrap up data object fields to be represented in tree nodes.<br> // (Data object fields are indicated through <code>FieldDeclaration</code>s)<br> tableController.setColumnProvider(<br> new ColumnProvider(<br> new ColumnData(CompanyModel.employee,Employee.firstName),<br> new ColumnData(CompanyModel.employee,Employee.lastName),<br> new ColumnData(CompanyModel.employee,Employee.phoneNumber),<br> new ColumnData(CompanyModel.employee,Employee.salary)));<br> <br> // Adding actions that open a dialog for column selection<br> ChangeColumnsAction.registerInMenu(this, tableController);<br> ChangeColumnsAction.registerInToolBar(this, tableController);<br> <br> // adding a context menu<br> ContextMenu menu = new ContextMenu();<br> menu.add(new OpenInEditorAction(tableController));<br> menu.add(new OpenInEditorPerspectiveAction(tableController));<br> menu.add(new ChangeEmployeeDepartmentAction(tableController));<br> menu.add(new RemoveDataObjectAction(tableController));<br> tableController.setContextMenu(this.getSite(),menu);<br><br> }<br><br> @Override<br> public void setFocus() {<br> this.tableController.getViewer().getControl().setFocus();<br> }<br><br> /**<br> * Opens EmployeesView<br> */ <br> private static EmployeesView getView(){<br> IWorkbenchPage page = PlatformUI.getWorkbench().<br> getActiveWorkbenchWindow().getActivePage();<br> EmployeesView result = null;<br> try {<br> for (IViewReference ref : page.getViewReferences()) {<br> if ("example.model.eclipse.views.EmployeesView"<br> .equals(ref.getId())) {<br> result = (EmployeesView) ref.getView(true);<br> break;<br> }<br> }<br> if (result == null) <br> result = (EmployeesView) page.showView(<br> "example.model.eclipse.views.EmployeesView");<br> } catch (PartInitException e) {<br> throw new RuntimeException(e);<br> }<br> return result;<br> }<br>}
Add an extension result:

Employee search panel

Create a panel that will search for employees by the entered parameters and display the search result in the table.
public class SearchEmployeeView extends ViewPart
implements IWidgetsContext{

private Label firstNameLabel;
private Text firstName;
private Label secondNameLabel;
private Text secondName;
private Label departmentLabel;
private DialogChooser<Department> department;
private Button searchButton;
private ContextControllerBinder contextBinder;
private SelectionAdapter doSearch = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
CompanyModel model = CompanyModel.getInstance();
EmployeeManager manager = model.getDataObjectManager(CompanyModel.employee);
String first = firstName.getText();
String second = secondName.getText();
Department d = department.getObject();
List